Reenforced metal lath



May 24, 1932. w. J. PURSER 1,859,409

REENFORGED METAL L'ATH Filed Feb. 24, 1930 u "5. Z9 .1711? y 75 K5 7g'79 f4 75 7g 75 i9 74 f5 f7 f.;

S14/vanto@ Parser? yao Patented May 24, 1932 UNITED STATES WILLIAM .'r.Ponsen, or MINERAL RIDGE, oHIo, AssIeNon ro Trin-Bosrwrci: sTEEL ,n YLATH COMPANY, or MILES, omo, A conroRAToN or omo n REENFORCED METALLA'TH- Appnctibn filed February 24,1936. serial No, 430,985.

This invention relates to improvements in reenforced metal lath of thenon-expanded type, and has for its general object to provide a metallath structure of the socalled truss loop type embodying a novelcombination and relative arrangement of features designed to impartlongitudinal and transverse stidness to the lath and at ,the same timeto provide effective keying formations to retain theplaster upon thelath. More particularly, the object of the invention is to incorporatethe desirable features of the so-called truss-loop type of metal lath ina metal lath sheet of corrugated, ribbed or channeled form, whereby thesheet stiffem'ng and reenforcing edectiveness of the truss loops areenhanced by reason of the corrugated nature of the sheet which resultsin a novel arrangement of the truss loops relative to one another, fandwhereby the stiftening effectiveness of the alternate ribs and channelsof the corrugated sheet is enhanced bythe truss loops which are fo-rmedin said ribs and channels. Y

With the foregoing and otherv objects in view, the invention consists inthe novel construction, combination and arrangement of Vfeaturesas willbe hereinafter more fully described, illustrated in the accompanyingdrawings and defined in the appended claims.

In the drawings, wherein like characters of reference denotecorresponding parts in thel different views Figure 1 is an outer faceview of a section of metal lath fabricated in accordance with thepresent invention.

Figure 2 is an inner face View of a section of the lath.

Figure 3 is a perspective View of a section of the lath. y y

Figure l is a longitudinal section -on the line 4 4 of Figure 1. Figure5 is a transverse section on the line 5-5 of Fig-1; and 1 -Figure 6 is aview similar toFig. 5 illustrating an alternative embodiment `of theinvention. 1

Referring to the drawings in detail, it `will Vbe observedthat thepresent lath consists essentially of Aa bodyy Aor base A' of sheetmetal? suitably bent to provide a plurality of pari allel ribs 10 andadepression'll between each adjacent pair `lof'said ribs, said ribs andsaid depressions being continuous longitudinally of thebody or base Aand preferably being of considerably greater width than depth.

Thus, basically, the present lath consists of a corrugated metal sheetcomposed of alter-v nate relatively wide ribs and relatively widedepressions therebetween extending continui ouslyV longitudinally of thesheet with the bottoms of the depressions lyingin a common plane andthe,y topsof the ribs lying inanother common plane parallel to'andispac'ed outwardly `with respect to the `'plane of theV bottomsofthe'depressions.' j

" Along the topof each rib 10v adjacentto each side thereof is lformedanoutwardly di rected ribI stiening bead 13, `whileconnect ing thesebeads at longitudinally spaced -in-f tervals are transverse ribs orbeads'll.V Thus, the top of each rib '1,0 is divided byy the transverseribs or' beads 14 into Va `plurality of plaster seats 15 eachof'whiclnin accordance 'i with the invention, is longitudinally slittedadjacent to the beads 13, '13, respectively, as

'indicated at 16, and has the 4,metal between said slits pressedtogether and arched outwardly to vprovide a so-called truss'. loop V17the characteristics of which are well known in theart. p Y Y l In asimilar manner, the bottom of each depression 11i is formed atlongitudinally spaced intervals withr outwardly directed transverse ribsor beads 18, and'between each adjacent pair of these ribs or beads theVmetal of the body or base A is longitudinally slitted adjacent totheside walls of the-depressions and, betweenvsaidslits, is pressed"together to provide an voutwardly directed arched truss loop 19.

Preferably,`the ribs or beads llrof the vribs ,Y

10 are disposed in alinement transversely of the b'odyjor base A andmidway between the thehinherent rigidity` and strength ofthe structureafforded by the ribs 10VV with their vtruss loops 17 disposed in a planespaced outwardly with respect to the plane of the botf toms Vof thedepressions 11 and their truss loops 19 is increased and the finalresult is a metal lath fabrication possessed of maximum' strength andstin'ess both longitudinally and transversely so that any danger of samebuckling or partaking of a wave motion when plaster is being appliedthereto is substantially eliminated.

Instead of the truss loops 17 'being formed to extend outwardly from theplaster seats 15, said truss loops obviously may b e directed inwardlyfrom said plaster seats as indicated at 17a in' Fig. 6 of the drawings,in ,which 'Y event the*k outermost portionsof said truss loops may liewithin, or substantially within,`

the planeof the bottoms of the depressions 11 with .the result that thelath structure, considered 'as an entirety, and in all other respects'aduplicate of the lath structure shown in Figs. 1 to 5, will be ofmaterially less over all thickness than the lath structure of said Figslto 5.

'Without further description itl thoughtl that the featuresandadvantages of the in- Y vention -will be readily 'apparentto thoseskilled in the art, and'it will of coursebe understoodkthat 'changes inthe form, proportion and ininor details of construction may be resortedto, withoutdeparting from the spirit of the invention vand, scope of theapf` pended claims.V r

I claim: Y 1. In a reenforced metal lath,`in combination a sheetof'inetalv corrugated to provide parallel'rib's and a depressionbetweeneach i.- adjacent pair of ribs, said ribs having pairs of j 4o laterallyspacedy llongiti'idinally extending slits and the metal between eachpair of said-` slits being crushefd'together vand arched [to providetruss loops. Y

2.V 1n a reenfo'rced metal lath, inv combination a sheet of metalcorrugated to provide parallel ribs and a depression betweeneachadjacent pair of ribs, the bottoms of said depressions having pairs loflaterally spaced longitudinally extending slits and the metal betweeneach pair of said slits being crushed together and arched to providetruss loops.

3. A reenforced metal lath consistingrof a sheet of metal corrugated toprovide parallel ribs and a depression'between each adjacent pairV ofribs, beads'forniedfa'long thetops of said ribs near the sidesthereof,said ribs between said beads having pairs of'laterally spacedlongitudinally extending slits and the metal between each pair lofisaidslits being crushed together and arched toprovide truss lops. rV A f j4. A reenforced metal lath consisting of a sheet'ofmetalcorrugated toprovide parallel Y ribs v-andadepression between each adjacent= pair ofribs,beadsvformedY along the tops of said ribs near the sides thereof,transverse Ythe bottoms of said depressions at spaced intervals, and atruss loop formed with the bottom-.of each depression between eachadjacent pair of said transverse ribs. f

' 6. A metal lath consisting of a. sheet of metal corrugated to provideparallel ribs and.

a depression between each adjacent pair of said ribs, transverse beadsat spaced inter-V vals across the topof said ribsland'across the bottomsof said depressions, respectively, and: outwardly directed trussloops-formed with the tops of said rib's'and tlie'bottonis of saiddepressions, respectively,betwee`n adjacent pairs of said transversebeadsf Y. TKA in'etal lath structure comprising a sheet of metalcorrugated to provide par-V allel ribs and a depression between eachadjacent pairof ribs, and stiffening formations extendingtransverselyacrossl`v said ribs at points spacedV longitudinally along vsaid ribs;8. A inetal lath. structure 'comprising a sheet of metal corrugated to'provide parallel ribs and a depression between each adjacent pair ofribs, and stiii'enin'g formations` y91 A 'metal lath'structureconiprising a sheet-of metal corrugated to'provide parallelribs and a depression between' each adjacent pair vof ribs,and's'tiffening formations extending transversely across saidribsandsaid'ss Y ioo depressions at Ypoints spaced'long-itudinally i along saidribs and Vsaid depressions respectively. l Y,

10. A metal lath' structure comprising a sheet of metal corrugated toprovideparallel ribs and a depression betweei'ieach adjacent pair ofribs, a stiifening formation along the top of each rib at each sidethereof andotlier stiifening formations Vextending ltransversely acrosssaid ribs at points spacedjlongitudinally along said ribs. j .Y

11. A metal latch; structure comprising a sheet of metal'corrugated toprovide parallel ribs and a depression between eachadjacent Apair ofribs,' a`stiffening formation along'the top of each rib at each sidethereof and other V stiifening formations extending transversely acrosssaidribs and across thebottomso'f said depressions at pointsspaced'longitudinally alongsaid ribs and said depressions,'respectively. A v V A Y 12.A metal lath structure con'iprisinga sheet of metalcorrugated' toiprovideparallel Y .ribs and a depression between eachadjacent pair of ribs', a stiffening formation along the top of each ribat each side thereof and other stiffening formations extendingtransversely across said ribs and across the bottoms of said depressionsat points spaced longitudinally along said ribs and said depressions,respectively, the transverse stiifening formations of said ribs beingstaggered with respect to the transverse stiffening formations of saiddepressions.

13. A metal lath structure comprising a sheet of metal corrugated toprovide parallel ribs and a depression between each adjacent pair ofribs, a stiifening formation along the top of each rib at each sidethereof, stiiiening formations extending transversely across said ribsat points spaced longitudinally along the ribs, and truss loopformations integral with each rib between said first mentionedstiftening formations and between each adjacent pair of said transversestiffening formations.

14; A metal lath structure comprising a sheet of metal corrugated toprovide parallel ribs and a depression between each adjacent pair ofribs, stiffening formations extending,

transversely across said ribs at points spaced longitudinallyalong saidribs, and truss loop formations on said ribs between each adjacent pairof said transverse stiffening formations.

l5. A metal lath structure comprising a sheet of metal corrugated toprovide parallel ribs and a depression between each adjacent pair ofribs, stiening formations extending transversely across said ribs andsaid depressions at points spaced longitudinally along said ribs andsaid depressions respectively, and truss loop formations integral withsaid ribs and with the bottoms of said depressions between each adjacentrelated pairs of said transverse stiffening formations, respectively.

16. A metal lath structure comprising a sheet of metal corrugated toprovide parallel ribs and a depression between each adjacent pair ofribs, a stiffening formation along the top of each rib at each sidethereof, other stiffening formations extending transversely across saidribs and across the bottoms of said depressions atv points spacedlongitudinally along said ribs and said depressions, truss loopformati-ons integral with said ribs between said longitudinal-reenforcing formations and between each adjacent pair of the transversereenforcing formations of said ribs7 and other truss loop formationsintegral with the bottoms vof said depressions between each adjacentpair of the transverse reenforcing formations of said depressions.

ln testimony whereof I hereunto aiiix my signature.

VILLIAM J. PURSER.

